Elevator-gate.



PATENTED JULY 5, 1904.

M. KAW.

ELEVATOR GATE.

APPLICATION FILED MAR. 21, 1904.

N0 MODEL.

att m wgA JNiTEn STATES Patented July 5, 1904.

PATENT .EETEE.

SONS COMPANY, OF

THE L. SCHREIBER & A CORPORATION.

ELEVATOR-GATE.

SPECIFICATION forming part of Letters Patent N 0. 764,130, dated July 5, 1904.

Application filed March 21, 1904.

To all whom it may concern:

Be it known that I, MAX KAW, a citizen of the United States, the county'of Hamilton and State. of Ohio, have int-Rented certain new and useful Improvements in Elevator-Gates, of which the following is a specification;

My invention relates to an improvement in anelevator-door opening and closing mechanism.

My invention relates to the type employing two or more moving panels sliding in parallel planes which unfold into closing position across the door-opening and which fold up into door-opening position behind a stationary panel equal substantially to the width of one of the movi-ng panels.

The features of my invention are more fully set forth in the description of the accompanying drawings, forming a part of this specification, in which- Figure 1 ,is an inside elevation of-my improvement as applied to two moving door members and shown in their closed position.

' Fig.2 illustrates the same in their open posiof the actu- Fig. 4 is a top plan view for three door members. a plan view of a modified form of tion. Fig. 3 is a top plan view ating mechanism. of my improvement Fig. 5 is lever.

A represents the doorway-frame.

B B represent horizontal top guideways, from which are suspended by brackets a and rollers 5 the door panels C D in parallel planes.

--C is the slower moving member, and D is the faster moving member.

E represents the stationary which the panels C D fold.

F represents a bracket secured to the edge of the frame A opposite the inner edge of the panel E. This bracket is provided with a bracket-ear c.

d represents a journal-bolt in the ear e.

Each panel is provided with two lever members hinged together to the stationary abutmerit and to the said panel. Thus panel D has the lever members G- H pivoted together and hinged to the bolt oi the bracket F and panel, behind residing at Cincinnati, in

moving door-panels as Serial No. 189,310. (No model.)

to the bolt or the'ears of the bracket it, at- 5 tached to the inner edge of panel D. Preferably member H has the inwardly-extended finger m overlapping the cooperating lever G and serving to limit the movement of the levers G H to a dead-center. Similarly, panel C has the two lever members J. K pivoted together and hinged to the bolted of bracket F. and to the bolt 2' of bracket is, attached to the inner edge of the panel C. Similarly, if a third panel were employed it would be provided with the two lever members L M, as shown in Fig. 4;,- all three of the inner members being hinged to abutment F. These levers operate .in therespective planes of their respective panels? 5 The inner members J, G, and Lareof different length, thereby imparting simultaneously different lengths of travel to their respective panels. The inner members G and J (the members which are hinged to the stationary 7 abutment) are connected together by the bolt 72 I preferably employ the connecting-bolts a and a (see Fig. 4.) when three panels are employed. The two levermembers which are hinged to the stationary abutment are of ditferent length and joined so as to move as a single element.

It is evident that I can employ as many desired.

This is a very simple mechanism for the pur- 30 pose described, and it is the only one of its lever class permitting of the unlimited extension of the moying panels. These levers are mounted to operate between the stationary abutment and the ends of the door-panels in 5 the respective vertical planes of movement of the said panels; Thus they are out of the way and conveniently and elfectively disposed. In the modification shown in Fig. -5, Dis a lever member which is hinged to the station- 9 ary abutment. This member is provided with the arms-P Q, in the parallel planes of the two panels. The two link-levers R S are hinged to the arms P Q and to their respective panels. This construction is an equivalent of the device shown in Fig. 3. The arms J G are rigidly seeured together and move ona common center.

position at one side of the 55" bershinged together, to said panel and to a in the modification shown in Fig. 5 the arm 3 is comiec'ted to thearm Q integrally. While the method of uniting the arms is mechanically different, they are practically the same in principle and mode of operation, being simply a choice of mechanical means or convenience of construction.

Having described my invention, I claim 1. ln an elevator-door opening and closing device, a plurality of panels slidable in paral-v lel planes, each panel having two lever mem- 3. In an elevator-door openingend closing.

device, a plurality of panels slidable in parallel planes, each panel having two lever members operating in the plane of sliding of its panel, said two lever members being hinged together, to said panel and to an adjacent stationary abutment and means connecting together the lever members which are hinged to said stationary abutment, substantially as described.

4. In an elevator-door opening and closing mechanism, a plurality of panels slidable in parallel planes, each panel having two lever members hinged together, to a stationary abutment and to the inner edge of said panel and means connecting those lever members which are hinged to the stationary abutment, substantially as described.

5. In an elevator-door opening and closing mechanism, a plurality of panels slidable in l ret na parallel lanes, each panel having two lever members hinged together, to said panel and to the adjacent stationary abutment, means connecting together those lever members which are hinged to the stationary abutment, one of the lever members of the system hav ing an overlapping finger adapted to engage over its cooperating lever member to limit the unfolding movements of the levers to a position at one side of the dead-center of the joints, substantially as described.

6. In an elevator-door opcningand closing device, a pluralityof panels slidable in parallel planes, each panel having two lever members hinged together, to said panel and to a stationary abutment, the lever members which re hinged to sa1d abutment, being secured together and being of different lengths whereby they impart simultaneously different lengths of travel to their respective panels, substantially as described.

7. In an elevator-door opening and closing device, a plurality of panels slidable in parallel planes, a journal-bracket attached to the stationary abutment at one side, a journalbraeket attached to the edge of each panel, two lever members for each panel hinged together, to the journal-bracket on the abutment, and t0 the journal-bracket on the panel, and means connecting together the lever members hinged to the stationary abutment, substantially as described.

8. In an elevator-door opening and closing device, a plurality'of panels slidable in parallel planes, two lever members of difi'erent length, joined to act as a unit, hinged to a stationary abutment, and means connecting the said two levers with the said two panels, substantially as described.

In testimony whereof I have hereunto set my hand.

MAX KAW.

Witnesses:

Uuvun B. KAISER, LEO ODomvnrm. 

